Magnetoresistive effect element, thin-film magnetic head, method for manufacturing magnetoresistive effect element, and method for manufacturing thin-film magnetic head

a technology of magnetoresistive effect and magnetic head, which is applied in the direction of nanomagnetism, data recording, instruments, etc., can solve the problems of inability to improve the the degradation mode becomes a problem, and the under and over layers are inevitably thin, so as to achieve sufficient bias magnetic field, sufficient crystallinity of the end portion of the magnetic domain controlling bias layer, and the effect o
US20080030908A1Inactive Publication Date: 2008-02-07TDK CORPARATION
4 Cites 13 Cited by

Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
TDK CORPARATION
Publication Date
2008-02-07
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A magnetoresistive effect (MR) element, a thin-film magnetic head having the MR element, a method for manufacturing the MR element, and a method for manufacturing the thin-film magnetic head are disclosed. The MR element, which uses electric current in a direction perpendicular to layer planes, includes a lower electrode layer, a MR multilayered structure formed on the lower electrode layer, a magnetic domain controlling bias layer that is disposed on both sides of the MR multilayered structure along the track-width direction and is made of a material at least partially including an hcp structure, a metal layer made of a material having a bcc structure formed on the magnetic domain controlling bias layer and the MR multilayered structure to cover the magnetic domain controlling bias layer and the MR multilayered structure, and an upper electrode layer formed on the metal layer.
Need to check novelty before this filing date? Find Prior Art

Description

PRIORITY CLAIM

[0001] This application claims priority from Japanese patent application No. 2006-209580 filed on Aug. 1, 2006, which is incorporated herein by reference.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates to a magnetoresistive effect (MR) element, a thin-film magnetic head having the MR element, a method for manufacturing the MR element, and a method for manufacturing a thin-film magnetic head having the MR element.

[0004] 2. Description of the Related Art

[0005] As the recording densities of hard disk drives (HDDs) increase, highly-sensitive and high-resolution thin-film magnetic heads are being demanded. In order to meet the demand, tunnel magnetoresistive effect (TMR) thin-film magnetic heads having a TMR read head element are becoming commercially practical. TMR thin-film magnetic heads has a CPP (Current Perpendicular to Plane) structure in which sense current flows in a direction perpendicular to the film planes or layer plan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More